User:Vincent de Chavez/Sandbox 1

 GFP

Wild type green fluorescent protein consists of eleven antiparallel beta sheets that form a barrel around an internal alpha helix that runs along the axis of the barrel. The alpha helix contains the choromophore which is responsible for its fluorescence. The cyclization occurs within the Ser65, Tyr66, and Gly67 residues, in which the amino group of Gly67 cylclizes with the carbonyl group of Ser65. In the presence of oxygen, Tyr66 is dehydrogenated which promotes the conjugated chromophore.

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